You have one test tube which contains a white solid that is either AgCl (s) or PbCl2 (s). Select a reagent that will allow you to differentiate between the two chemical species. If the solid is AgCl, what will happen when the reagent is added

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.